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| Ramlat as Sahmah 247 | |||||||||
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| Basic information | Name: Ramlat as Sahmah 247 This is an OFFICIAL meteorite name. Abbreviation: RaS 247 Observed fall: No Year found: 2005 Country: Oman Mass:  579 g | ||||||||
| Classification history: |
This is 1 of 660 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||
| Comments: | Approved 1 Sep 2006 | ||||||||
| Writeup |
Writeup from MB 91:
Ramlat as Sahmah 247 20°18.685′N, 56°13.519′E Oman Find: 17 February 2005 Achondrite (ureilite) History: S. Bartels, J. Bühler, B. Hofmann, I. Leya, and S. Lorenzetti recovered a single stone was during a systematic search for meteorites. A small fragment (0.16 g) of Fe-hydroxide with troilite inclusions found a few meters away and is probably derived from this meteorite as well. Physical characteristics: Rounded, dark brown single
stone with a mass of 579.0 g; no fusion crust preserved. Petrography: (E. Gnos, UBE; B. Hofmann, NMBE; A. Al-Kathiri, UBE) The stone contains 16 vol% of 0.5– 1.8 mm size carbon plates consisting of graphite and diamond (confirmed by XRD). Carbon plates occur along grain boundaries of olivine (30 vol%) and pyroxene (54 vol%). The carbon plates show a preferred orientation parallel to the elongated silicate grains. Pyroxene grains are cloudy due to tiny inclusions and metal exsolution occurs in olivine at the contact with carbon, and along discrete zones within grains. Mineral compositions and geochemistry: Mean
compositions are olivine (Fa19.6) and pyroxene (Fs17.4Wo11.2). Reduced olivine
grains near carbon plates reach composition of Fa1.0. Metal and troilite are
partially oxidized. Classification: Achondrite (ureilite); S2. Type specimen: The meteorite is on deposit at NMBE. | ||||||||
| Institutions and collections |
NMBE: Natural History Museum Bern
Bernastrasse 15
CH-3005 Bern
Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012) UBE: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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Geography:
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Statistics: This is 1 of 1753 approved meteorites from Al Wusta, Oman (plus 81 unapproved names) This is 1 of 3998 approved meteorites from Oman (plus 441 unapproved names) | ||||||||
| Proximity search: | |||||||||
| Also see: |
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| Revision history: |
This lists important revisions made to data for this record.
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